html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: #2b2b2b;
    color: #e7e7e7;
    font-size: 2rem;
    font-weight: normal;
    font-family: sans-serif;
    vertical-align: middle;
}

.row {
    display: block;
    border-top: .01rem solid #191919;
}

.row1 {
    height: 100%;
}

.row2 {
    height: calc(100% / 2);
}

#sets {
    background-color: #f97c17;
    height: 8rem;
    line-height: 4rem;
}

.set {
    display: inline-block;
    font-size: 2rem;
}

#options {
    height: 2rem;
    line-height: 1rem;
}

#game {
    height: calc(100% - 10rem);
    min-height: 8rem;
}

button, select {
    height: 100%;
    position: relative;
    float: left;
    display: inline-block;
    text-align: center;
    line-height: 100%;
    background-color: #2b2b2b;
    border: .01rem solid #191919;
    font-size: 1rem;
    color: #e7e7e7;
    overflow: hidden;
    background: transparent;
    vertical-align: middle;
}

button.active {
    background-color: #008EAB;
}

#game button {
    width: 100%;
    border: .01rem solid #191919;
    font-size: 2rem;
}
